Local search optimization | Wordtracker:

Those who benefit very little: Those who do not benefit nearly as much are websites that aim strictly to educate. Many blogs fall into this category. It would be hard to earn a space on a local SERP if you don’t have a business that people will want to search for based on location. Few searchers are going to type in queries like "How to start creating a website in Chicago." Rather, they would type in something like “Company in Chicago to help start a website.” With that second query, it’s those companies that offer that service that would benefit from local results (falling under that first category of those who benefit from local search a lot).